Dave has worked as a wilderness conservationist since 1971. From 1982 to 1988, he was editor of the Earth First! Journal and one of the outfit’s most visible leaders. He speaks widely on conservation issues and is author of The Lobo Outback Funeral Home (a novel), Confessions of an Eco-Warrior, and The Big Outside (with Howie Wolke). His book on conservation biology and continental-scale conservation, Rewilding North America was published in 2004. His latest books are Man Swarm: How Overpopulation is Killing the Wild World and The Great Conservation Divide , a history of the 20th-century battle between grassroots conservationists and the resourcists in the Forest Service and other agencies over the future of the last wilderness in the United States. He was named by Audubon magazine in 1998 as one of the 100 Champions of Conservation of the 20th Century.